iseq illumina protocol 16s sequencing rrna microbiome
iseq 16s cartridge illumina rrna microbiome
16s illumina iseq protocol rrna sequencing miseq microbiome metagenomic
sequencing amplicon illumina 16s protocol bacterial scilifelab presence
16s pcr rrna primer gene primers sequencing ngs region regions bacterial variable size 341f analysis coli help illumina formats recommended
16s rrna microbiome necessary metadata gather